DragonFly On-Line Manual Pages

crypto(3) OpenSSL crypto(3)

NAME

crypto - OpenSSL cryptographic library

SYNOPSIS

DESCRIPTION

The OpenSSL crypto library implements a wide range of cryptographic
algorithms used in various Internet standards. The services provided by
this library are used by the OpenSSL implementations of SSL, TLS and
S/MIME, and they have also been used to implement SSH, OpenPGP, and
other cryptographic standards.

NOTES

Some of the newer functions follow a naming convention using the
numbers 0 and 1. For example the functions:
int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
The 0 version uses the supplied structure pointer directly in the
parent and it will be freed up when the parent is freed. In the above
example crl would be freed but rev would not.
The 1 function uses a copy of the supplied structure pointer (or in
some cases increases its link count) in the parent and so both (x and
obj above) should be freed up.